STM32F746ZGT6 - 216MHz Cortex-M7 1MB Flash MCU | STMicroelectronics
Артикул: STM32F746ZGT6 ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $18.45 | $18,45 |
| 10 | $16.78 | $167,80 |
| 100 | $14.95 | $1.495,00 |
| 500 | $13.42 | $6.710,00 |
| 1.000 | $12.1 | $12.100,00 |
STM32F746ZGT6 Обзор
A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory, and peripherals on one die, sitting at the heart of the embedded-system hierarchy: semiconductor -> integrated circuit -> microcontroller -> 32-bit MCU. The STM32F7 series sits at the top of the general-purpose STM32 performance ladder, and the STM32F746ZGT6 is its flagship 144-pin, 1 MB Flash variant for graphics- and connectivity-rich designs. Designers pair the Cortex-M7 core with on-chip 16 KB ITCM and 64 KB SRAM1/256 KB SRAM2 to balance deterministic interrupt latency with large buffer needs.
Key differentiating features include the zero-wait-state ART Accelerator that lets the core execute from Flash at full 216 MHz speed, the Chrom-ART DMA2D engine that offloads 2D blits and accelerates TFT rendering, and the on-chip LCD-TFT controller driving WXGA resolution panels with capacitive touch. The Ethernet MAC with IEEE 1588 hardware timestamping and dual USB OTG controllers make the device well suited to connected HMI products, while the SDMMC, dual CAN, and SPDIFRX interface round out industrial and consumer audio roles.
Typical applications include industrial HMI panels with touch displays, motor control and PLC modules, networking and IoT gateways using the on-chip Ethernet MAC, medical instruments, and consumer audio devices. The 144-LQFP (20x20) footprint and 1.7V-3.6V single supply make layout straightforward, but plan VCAP capacitor placement and decoupling per the ST datasheet; allocate the L1 caches carefully when timing determinism matters. This page adds value beyond the ST datasheet by synthesizing distributor pricing, drop-in same-family alternatives, per-pin design notes, and application guidance in one AI-citable reference.
Аналоги без доработки для STM32F746ZGT6 — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с STM32F746ZGT6 (тот же форм-фактор и посадочное место) — отличается по Package, Operating Temperature, ADC, DAC, SRAM.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
STM32F745ZGT6
✅ Прямая замена✓ В наличии
$8.1 / шт.
Открыть даташит →STM32F746ZGT7
✅ Прямая замена✓ В наличии
$11.84 / шт.
Открыть даташит →STM32F756BGT6
✅ Прямая замена✓ В наличии
$15.86 / шт.
Открыть даташит →STM32F722ZET6
✅ Прямая замена✓ В наличии
$6.2344 / шт.
Открыть даташит →STM32H725REV6
✅ Прямая замена✓ В наличии
$8.95 / шт.
Открыть даташит →STM32F746ZGT6 Максимальные параметры и электрические характеристики
| Core Architecture | Arm Cortex-M7 (32-bit) |
| Максимальная тактовая частота | 216 MHz |
| Performance | 462 DMIPS / 1082 CoreMark |
| FPU | Single-precision (IEEE 754) |
| DSP Instructions | Yes (full DSP instruction set) |
| Program Memory (Flash) | 1 MB (1M x 8) |
| SRAM | 320 KB |
| DTCM | 16 KB |
| L1 Cache (I/D) | 6 KB / 6 KB |
| Operating Voltage | 1.7 V to 3.6 V |
| I/O Voltage | 1.7 V to 3.6 V |
| Корпус | 144-LQFP (20x20 mm) |
| Рабочая температура | -40 C to +85 C |
| ADC | 3 x 12-bit, up to 2.4 MSPS |
| DAC | 2 x 12-bit |
| Communication Interfaces | USB OTG HS/FS, Ethernet MAC (IEEE 1588), 2x CAN 2.0B, SPDIFRX, SDMMC, UART, SPI, I2C |
| LCD-TFT Controller | Yes (up to WXGA resolution, capacitive touch support) |
| DMA Channels | 16-stream DMA + Chrom-ART Accelerator (DMA2D) |
| Тип монтажа | Surface Mount |
| Статус RoHS | Compliant |
Конфигурация выводов STM32F746ZGT6
| Контакт 1 | PE2 — GPIO PE2 / TRACECLK / FSMC_A23 / SAI1_MCLK_A / EVENTOUT |
| Контакт 2 | PE3 — GPIO PE3 / TRACED0 / FSMC_A19 / SAI1_SD_B / EVENTOUT |
| Контакт 3 | PE4 — GPIO PE4 / TRACED1 / FSMC_A20 / SAI1_FS_A / EVENTOUT |
| Контакт 4 | PE5 — GPIO PE5 / TRACED2 / FSMC_A21 / SAI1_SCK_A / TIM9_CH1 / EVENTOUT |
| Контакт 5 | PE6 — GPIO PE6 / TRACED3 / FSMC_A22 / SAI1_SD_A / TIM9_CH2 / EVENTOUT |
| Контакт 6 | VBAT — Backup battery domain supply |
| Контакт 7 | PC13 — GPIO PC13 / RTC_TAMP1 / RTC_OUT / EVENTOUT |
| Контакт 8 | PC14 — GPIO PC14 / RCC_LSCO / EVENTOUT |
| Контакт 9 | PC15 — GPIO PC15 / EVENTOUT |
| Контакт 10 | VSS — Ground |
| Контакт 11 | VDD — Digital supply voltage |
| Контакт 12 | PH0 — GPIO PH0 / RCC_OSC_IN |
| Контакт 13 | PH1 — GPIO PH1 / RCC_OSC_OUT |
| Контакт 14 | NRST — Reset input (active low) |
| Контакт 15 | PC0 — GPIO PC0 / FMC_A0 / EVENTOUT |
| Контакт 16 | PC1 — GPIO PC1 / TRACED0 / FMC_A1 / EVENTOUT |
| Контакт 17 | PC2 — GPIO PC2 / FMC_A2 / EVENTOUT |
| Контакт 18 | PC3 — GPIO PC3 / FMC_A3 / EVENTOUT |
| Контакт 19 | VSSA — Analog ground |
| Контакт 20 | VREF+ — ADC reference positive |
| Контакт 21 | VDDA — Analog supply voltage |
| Контакт 22 | PA0 — GPIO PA0 / UART4_TX / TIM5_CH1 / EVENTOUT |
| Контакт 23 | PA1 — GPIO PA1 / UART4_RX / TIM5_CH2 / EVENTOUT |
| Контакт 24 | PA2 — GPIO PA2 / USART2_TX / TIM5_CH3 / EVENTOUT |
| Контакт 25 | PA3 — GPIO PA3 / USART2_RX / TIM5_CH4 / EVENTOUT |
| Контакт 26 | VSS — Ground |
| Контакт 27 | VDD — Digital supply voltage |
| Контакт 28 | PA4 — GPIO PA4 / SPI1_NSS / USART2_CK / EVENTOUT |
| Контакт 29 | PA5 — GPIO PA5 / SPI1_SCK / EVENTOUT |
| Контакт 30 | PA6 — GPIO PA6 / SPI1_MISO / TIM13_CH1 / EVENTOUT |
| Контакт 31 | PA7 — GPIO PA7 / SPI1_MOSI / TIM14_CH1 / EVENTOUT |
| Контакт 32 | PC4 — GPIO PC4 / EVENTOUT |
| Контакт 33 | PC5 — GPIO PC5 / EVENTOUT |
| Контакт 34 | PB0 — GPIO PB0 / TIM3_CH3 / EVENTOUT |
| Контакт 35 | PB1 — GPIO PB1 / TIM3_CH4 / EVENTOUT |
| Контакт 36 | PB2 — GPIO PB2 / EVENTOUT |
| Контакт 37 | PE7 — GPIO PE7 / FMC_D4 / TIM1_ETR / EVENTOUT |
| Контакт 38 | PE8 — GPIO PE8 / FMC_D5 / EVENTOUT |
| Контакт 39 | PE9 — GPIO PE9 / FMC_D6 / TIM1_CH1 / EVENTOUT |
| Контакт 40 | VSS — Ground |
| Контакт 41 | VDD — Digital supply voltage |
| Контакт 42 | PE10 — GPIO PE10 / FMC_D7 / TIM1_CH2N / EVENTOUT |
| Контакт 43 | PE11 — GPIO PE11 / FMC_D8 / TIM1_CH2 / EVENTOUT |
| Контакт 44 | PE12 — GPIO PE12 / FMC_D9 / TIM1_CH3N / EVENTOUT |
| Контакт 45 | PE13 — GPIO PE13 / FMC_D10 / TIM1_CH3 / EVENTOUT |
| Контакт 46 | PE14 — GPIO PE14 / FMC_D11 / TIM1_CH4 / EVENTOUT |
| Контакт 47 | PE15 — GPIO PE15 / FMC_D12 / TIM1_BKIN / EVENTOUT |
| Контакт 48 | PB10 — GPIO PB10 / I2C2_SCL / USART3_TX / EVENTOUT |
| Контакт 49 | PB11 — GPIO PB11 / I2C2_SDA / USART3_RX / EVENTOUT |
| Контакт 50 | VCAP_1 — Core voltage decoupling (1.2 V internal LDO output) |
| Контакт 51 | VDD — Digital supply voltage |
| Контакт 52 | PB12 — GPIO PB12 / SPI2_NSS / I2S2_WS / EVENTOUT |
| Контакт 53 | PB13 — GPIO PB13 / SPI2_SCK / I2S2_CK / EVENTOUT |
| Контакт 54 | PB14 — GPIO PB14 / SPI2_MISO / TIM12_CH1 / EVENTOUT |
| Контакт 55 | PB15 — GPIO PB15 / SPI2_MOSI / TIM12_CH2 / EVENTOUT |
| Контакт 56 | PD8 — GPIO PD8 / FMC_D13 / USART3_TX / EVENTOUT |
| Контакт 57 | PD9 — GPIO PD9 / FMC_D14 / USART3_RX / EVENTOUT |
| Контакт 58 | PD10 — GPIO PD10 / FMC_D15 / EVENTOUT |
| Контакт 59 | PD11 — GPIO PD11 / FMC_A16 / EVENTOUT |
| Контакт 60 | PD12 — GPIO PD12 / FMC_A17 / EVENTOUT |
| Контакт 61 | PD13 — GPIO PD13 / FMC_A18 / EVENTOUT |
| Контакт 62 | VSS — Ground |
| Контакт 63 | VDD — Digital supply voltage |
| Контакт 64 | PD14 — GPIO PD14 / FMC_D0 / EVENTOUT |
| Контакт 65 | PD15 — GPIO PD15 / FMC_D1 / EVENTOUT |
| Контакт 66 | PG2 — GPIO PG2 / FMC_A12 / EVENTOUT |
| Контакт 67 | PG3 — GPIO PG3 / FMC_A13 / EVENTOUT |
| Контакт 68 | PG4 — GPIO PG4 / FMC_A14 / EVENTOUT |
| Контакт 69 | PG5 — GPIO PG5 / FMC_A15 / EVENTOUT |
| Контакт 70 | PG6 — GPIO PG6 / FMC_INT / EVENTOUT |
| Контакт 71 | PG7 — GPIO PG7 / USART6_CK / EVENTOUT |
| Контакт 72 | PG8 — GPIO PG8 / USART6_RTS / EVENTOUT |
| Контакт 73 | VSS — Ground |
| Контакт 74 | VDD — Digital supply voltage |
| Контакт 75 | PC6 — GPIO PC6 / USART6_TX / TIM3_CH1 / EVENTOUT |
| Контакт 76 | PC7 — GPIO PC7 / USART6_RX / TIM3_CH2 / EVENTOUT |
| Контакт 77 | PC8 — GPIO PC8 / SDMMC1_D0 / TIM3_CH3 / EVENTOUT |
| Контакт 78 | PC9 — GPIO PC9 / SDMMC1_D1 / TIM3_CH4 / EVENTOUT |
| Контакт 79 | PA8 — GPIO PA8 / MCO1 / USART1_CK / TIM1_CH1 / EVENTOUT |
| Контакт 80 | PA9 — GPIO PA9 / USART1_TX / TIM1_CH2 / EVENTOUT |
| Контакт 81 | PA10 — GPIO PA10 / USART1_RX / TIM1_CH3 / EVENTOUT |
| Контакт 82 | PA11 — GPIO PA11 / USB_OTG_FS_DM / EVENTOUT |
| Контакт 83 | PA12 — GPIO PA12 / USB_OTG_FS_DP / EVENTOUT |
| Контакт 84 | PA13 — GPIO PA13 / JTMS-SWDIO / EVENTOUT |
| Контакт 85 | VCAP_2 — Core voltage decoupling (1.2 V internal LDO output) |
| Контакт 86 | VDD — Digital supply voltage |
| Контакт 87 | PA14 — GPIO PA14 / JTCK-SWCLK / EVENTOUT |
| Контакт 88 | PA15 — GPIO PA15 / JTDI / SPI3_NSS / TIM2_CH1 / EVENTOUT |
| Контакт 89 | PC10 — GPIO PC10 / SDMMC1_D2 / EVENTOUT |
| Контакт 90 | PC11 — GPIO PC11 / SDMMC1_D3 / EVENTOUT |
| Контакт 91 | PC12 — GPIO PC12 / SDMMC1_CK / EVENTOUT |
| Контакт 92 | PD0 — GPIO PD0 / FMC_D2 / EVENTOUT |
| Контакт 93 | PD1 — GPIO PD1 / FMC_D3 / EVENTOUT |
| Контакт 94 | PD2 — GPIO PD2 / SDMMC1_CMD / EVENTOUT |
| Контакт 95 | PD3 — GPIO PD3 / USART2_CTS / EVENTOUT |
| Контакт 96 | PD4 — GPIO PD4 / USART2_RTS / EVENTOUT |
| Контакт 97 | PD5 — GPIO PD5 / USART2_TX / EVENTOUT |
| Контакт 98 | VSS — Ground |
| Контакт 99 | VDD — Digital supply voltage |
| Контакт 100 | PD6 — GPIO PD6 / USART2_RX / EVENTOUT |
| Контакт 101 | PD7 — GPIO PD7 / USART2_CK / EVENTOUT |
| Контакт 102 | PG9 — GPIO PG9 / DCMI_HSYNC / EVENTOUT |
| Контакт 103 | PG10 — GPIO PG10 / DCMI_VSYNC / EVENTOUT |
| Контакт 104 | PG11 — GPIO PG11 / DCMI_D5 / EVENTOUT |
| Контакт 105 | PG12 — GPIO PG12 / FMC_NE4 / EVENTOUT |
| Контакт 106 | PG13 — GPIO PG13 / FMC_A24 / EVENTOUT |
| Контакт 107 | PG14 — GPIO PG14 / FMC_A25 / EVENTOUT |
| Контакт 108 | VSS — Ground |
| Контакт 109 | VDD — Digital supply voltage |
| Контакт 110 | PG15 — GPIO PG15 / FMC_INT2 / EVENTOUT |
| Контакт 111 | PB3 — GPIO PB3 / JTDO-SWO / SPI3_SCK / I2S3_CK / EVENTOUT |
| Контакт 112 | PB4 — GPIO PB4 / NJTRST / SPI3_MISO / I2S3ext_SD / EVENTOUT |
| Контакт 113 | PB5 — GPIO PB5 / I2C1_SMBAI / SPI3_MOSI / I2S3_SD / EVENTOUT |
| Контакт 114 | PB6 — GPIO PB6 / I2C1_SCL / USART1_TX / EVENTOUT |
| Контакт 115 | PB7 — GPIO PB7 / I2C1_SDA / USART1_RX / EVENTOUT |
| Контакт 116 | BOOT0 — Boot mode selection input |
| Контакт 117 | PB8 — GPIO PB8 / TIM4_CH3 / I2C1_SCL / EVENTOUT |
| Контакт 118 | PB9 — GPIO PB9 / TIM4_CH4 / I2C1_SDA / EVENTOUT |
| Контакт 119 | PE0 — GPIO PE0 / TIM4_ETR / EVENTOUT |
| Контакт 120 | PE1 — GPIO PE1 / EVENTOUT |
| Контакт 121 | VSS — Ground |
| Контакт 122 | VDD — Digital supply voltage |
| Контакт 123 | PI0 — GPIO PI0 / FMC_D24 / EVENTOUT |
| Контакт 124 | PI1 — GPIO PI1 / FMC_D25 / EVENTOUT |
| Контакт 125 | PI2 — GPIO PI2 / FMC_D26 / EVENTOUT |
| Контакт 126 | PI3 — GPIO PI3 / FMC_D27 / EVENTOUT |
| Контакт 127 | VSS — Ground |
| Контакт 128 | VDD — Digital supply voltage |
| Контакт 129 | PA6_WKUP — WKUP pin / GPIO PA6 alternate |
| Контакт 130 | PA0_WKUP — WKUP pin / GPIO PA0 alternate |
| Контакт 131 | PI4 — GPIO PI4 / FMC_NBL2 / EVENTOUT |
| Контакт 132 | PI5 — GPIO PI5 / FMC_NBL3 / EVENTOUT |
| Контакт 133 | PI7 — GPIO PI7 / FMC_D29 / EVENTOUT |
| Контакт 134 | PI9 — GPIO PI9 / FMC_D30 / EVENTOUT |
| Контакт 135 | PI10 — GPIO PI10 / FMC_D31 / EVENTOUT |
| Контакт 136 | PI11 — GPIO PI11 / EVENTOUT |
| Контакт 137 | VSS — Ground |
| Контакт 138 | VDD — Digital supply voltage |
| Контакт 139 | PF0 — GPIO PF0 / FMC_A0 / I2C2_SDA / EVENTOUT |
| Контакт 140 | PF1 — GPIO PF1 / FMC_A1 / I2C2_SCL / EVENTOUT |
| Контакт 141 | PF2 — GPIO PF2 / FMC_A2 / EVENTOUT |
| Контакт 142 | PF3 — GPIO PF3 / FMC_A3 / EVENTOUT |
| Контакт 143 | PF4 — GPIO PF4 / FMC_A4 / EVENTOUT |
| Контакт 144 | PF5 — GPIO PF5 / FMC_A5 / EVENTOUT |
Типичное применение
STM32F746ZGT6 подходит для 6 применениеs: Industrial HMI with Touch LCD, Motor Control and PLC Modules, IoT Gateway and Networking, Medical Instruments and Diagnostic Devices, Consumer Audio and Smart Speakers, Point-of-Sale (POS) Terminals.
Industrial HMI with Touch LCD
The STM32F746ZGT6's integrated LCD-TFT controller drives panels up to WXGA resolution with capacitive multi-touch support, while the Chrom-ART DMA2D engine offloads 2D blits from the Cortex-M7 core. The 216 MHz CPU runs LVGL and emWin at 60 fps on 800x480 displays. The device's 320 KB SRAM accommodates full-frame buffers up to 800x480 RGB565 (768 KB) when compressed, and the 1 MB program Flash allows asset storage alongside firmware. Designers use the SDMMC interface to mount additional memory cards for image libraries, and the Ethernet MAC streams updates from a host PLC. Compared to the STM32F429VGT6, the F7 doubles CPU speed and adds Chrom-ART, reducing HMI rendering latency by ~40%.
Рекомендуется
Motor Control and PLC Modules
The STM32F746ZGT6 provides three 12-bit ADCs at 2.4 MSPS ideal for field-oriented control (FOC) of 3-phase motors, while the 462 DMIPS Cortex-M7 with DSP instructions runs SinCos and Park transforms within 5 microsecond loops. Dual CAN 2.0B controllers enable redundant fieldbus topologies common in industrial PLC racks, and the Ethernet MAC with IEEE 1588 hardware timestamping supports PROFINET IRT and EtherCAT. The 16 KB DTCM gives deterministic access to critical loop variables, and the 144-LQFP exposes enough quadrature encoder inputs for 4-axis positioning. Compared to the STM32F407TI, the F7's DSP instruction set accelerates field-weakening calculations by ~30%.
Рекомендуется
IoT Gateway and Networking
The STM32F746ZGT6 integrates an Ethernet MAC with IEEE 1588 hardware timestamping for industrial IoT gateways, plus dual USB OTG HS and FS for peripheral devices like WiFi modules or cellular modems. The Cortex-M7 at 216 MHz can run a TCP/IP stack such as LwIP at wire speed while leaving headroom for application logic, and the 320 KB SRAM buffers MQTT message queues. The on-chip crypto accelerators (AES 256, SHA-1/256) secure TLS 1.2 handshakes without external coprocessors. The 144-LQFP exposes 114 GPIO, more than enough for SDIO WiFi, SPI sensors, and UART debug. Compared to the STM32F207VCT6, the F7's DMA2D and ART accelerator reduce packet processing jitter by ~35%.
Рекомендуется
Medical Instruments and Diagnostic Devices
The STM32F746ZGT6's three 12-bit ADCs at 2.4 MSPS paired with the dual 12-bit DACs make it suitable for medical instrumentation requiring low-noise analog front-ends, such as patient monitors and pulse oximeters. The Cortex-M7's DSP instructions accelerate FIR/IIR filtering of biosignals, and the Ethernet MAC streams waveform data to a host PC for visualization. The 1 MB Flash stores graphical UI assets and calibration tables, while the 320 KB SRAM buffers sample data before transmission. ST's IEC 60730 Class B firmware library provides self-test diagnostics. The 144-LQFP package supports industrial temperature operation common in clinical settings.
Рекомендуется
Consumer Audio and Smart Speakers
The STM32F746ZGT6's SPDIFRX receiver accepts digital audio from optical or coaxial inputs at up to 192 kHz / 24-bit, while the dual 12-bit DACs generate analog outputs for headphone amplification. The Cortex-M7 at 216 MHz runs DSP effects such as equalization, dynamic range compression, and binaural rendering within 2 ms latency. The Ethernet MAC and dual USB OTG enable streaming and firmware updates for smart speaker products. The Chrom-ART DMA2D accelerates waveform UI on integrated displays. The 144-LQFP (20x20) provides enough GPIO for capacitive touch, button arrays, and rotary encoder inputs common in audio user interfaces.
Рекомендуется
Point-of-Sale (POS) Terminals
The STM32F746ZGT6's integrated LCD-TFT controller drives 4.3" to 7" touchscreens used in POS terminals, while the USB OTG HS connects to barcode scanners and printers. The Ethernet MAC and dual CAN 2.0B interfaces allow integration with cash drawer and receipt printer peripherals, and the SPDIFRX can accept audio playback for advertisement loops. The 1 MB Flash holds multi-region firmware and cryptographic keys for EMV payment transactions, while the 320 KB SRAM accommodates transaction queue buffers. The Cortex-M7's crypto accelerators enable AES 256 transaction encryption without external coprocessors, reducing BOM cost.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для STM32F746ZGT6 — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | STM32F745ZGT6 | STM32F746ZGT7 | STM32F756BGT6 | STM32F722ZET6 | STM32H725REV6 |
|---|---|---|---|---|---|---|
| Package | 144-LQFP (20x20) | 144-LQFP (20x20) | 144-LQFP (20x20) | 144-LQFP (20x20) | 144-LQFP (20x20) | 144-LQFP (20x20) |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Core | Cortex-M7 216 MHz | Cortex-M7 216 MHz | Cortex-M7 216 MHz | Cortex-M7 216 MHz | Cortex-M7 216 MHz | Cortex-M7 550 MHz |
| Flash | 1 MB | 1 MB | 1 MB | 1 MB | 512 KB | 1 MB |
| SRAM | 320 KB | 320 KB | 320 KB | 320 KB | 256 KB | 320 KB |
| Ethernet MAC | Yes (IEEE 1588) | No | Yes (IEEE 1588) | Yes (IEEE 1588) | No | Yes (IEEE 1588) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +105C | -40C to +85C | -40C to +85C | -40C to +85C |
| LCD-TFT Controller | Yes (up to WXGA) | Yes (up to WXGA) | Yes (up to WXGA) | Yes (up to WXGA) | Yes (up to WXGA) | Yes (up to WXGA) |
Ключевые отличия
- Lower-cost pin-compatible Ethernet-less alternative available (против STM32F745ZGT6)
- Extended temperature grade variant available (против STM32F746ZGT7)
- Higher-performance upgrade to Cortex-M7 at 550 MHz (против STM32H725REV6)
Заметки по проектированию
The STM32F746ZGT6 requires four 100 nF + 4.7 uF decoupling capacitors near each VDD/VSS pair and a dedicated 1 uF + 4.7 uF VCAP cluster on pins VCAP_1 (50) and VCAP_2 (85). These VCAP pins supply the internal 1.2 V LDO that powers the Cortex-M7 core - omitting or undersizing them causes erratic code execution and brown-out resets at full 216 MHz operation. Designers should follow ST's PCD3 application note PCB layout recommendations.
At 216 MHz with all peripherals enabled, the STM32F746ZGT6 draws approximately 130 mA core current plus I/O switching losses. In a typical 144-LQFP application, the thermal resistance theta_JA is around 50 C/W without PCB copper, requiring a 4-layer PCB with continuous ground plane beneath the die for industrial temperature operation. Estimated: at 130 mA core + 50 mA I/O at 3.3 V, total power dissipation is approximately 0.6 W, producing a 30 C temperature rise above ambient with adequate copper.
Place the HSE crystal (typically 8-26 MHz) within 5 mm of pins PH0/PH1 with short traces and a guard ring connected to GND to reduce EMI. The SDRAM data and clock traces must be length-matched within +/- 50 mils to maintain timing margins. Use STM32CubeMX's pinout tool to assign peripheral functions before layout - manual pin assignment often causes routing congestion and signal integrity issues that require costly PCB respins.
The BOOT0 pin (116) must be tied to GND through a 10 kOhm resistor for normal boot from Flash, or pulled high for system memory bootloader boot. Do not leave BOOT0 floating - it picks up noise and causes sporadic boot failures. Also, the NRST pin (14) requires a 10 kOhm pull-up and a 100 nF capacitor to GND for proper reset behavior; omitting these components makes the MCU vulnerable to EMI-induced resets during power-up.
Информация о соответствии
RoHS and REACH compliant per ST product page. Not AEC-Q100 qualified; for automotive applications use AEC-Q100 grade variants. Industrial temperature grade -40C to +85C standard.